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IL-17a

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https://www.readbyqxmd.com/read/27931975/identification-of-il-17f-frequent-exacerbator-endotype-in-asthma
#1
Fabio L M Ricciardolo, Valentina Sorbello, Anna Folino, Fabio Gallo, Gian Mario Massaglia, Gabriella Favatà, Salvatore Conticello, Davide Vallese, Federica Gani, Mario Malerba, Gert Folkerts, Giovanni Rolla, Mirella Profita, Thais Mauad, Antonino Di Stefano, Giorgio Ciprandi
BACKGROUND: Severe asthma might be associated with neutrophil recruitment and Th17 cytokines over-expression in bronchial biopsies. OBJECTIVE: To study IL-17-related cytokines in nasal/bronchial biopsies from controls and mild (MA)-to-severe (SA) asthmatics in relation to exacerbation rate. METHODS: Inflammatory cells and IL-17A(+), IL-17F(+), IL-21(+), IL-22(+) and IL-23(+) cells were examined by immunohistochemistry (IHC) in cryostat sections of bronchial/nasal biopsies obtained from 33 SA (21 frequent exacerbators (FE)), 31 MA (3 FE) and 14 controls...
December 5, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27931275/serum-tryptase-level-and-inflammatory-markers-in-exhaled-breath-condensate-of-children-with-exercise-induced-symptoms
#2
Iwona Stelmach, Magdalena Zaczeniuk, Anna Sztafiska, Pawe Majak, Joanna Jerzyska, Anna Kuklinska-Pijanka, Wlodzimierz Stelmach
BACKGROUND: The pathogenesis of exercise-induced bronchoconstriction (EIB) is poorly understood. OBJECTIVE: To evaluate the biomarkers concentration in exhaled breath condensate (EBC) in schoolchildren with postexercise symptoms. We also evaluated changes in fractional exhaled nitric oxide (FeNO) value and the serum tryptase level after exercise. METHODS: One hundred children with postexercise symptoms were included. Methacholine challenge testing (MCT) was performed at visit 2, and exercise challenge testing (ECT) was performed at visit 3...
September 2016: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/27930337/genetic-immunological-and-clinical-features-of-patients-with-bacterial-and-fungal-infections-due-to-inherited-il-17ra-deficiency
#3
Romain Lévy, Satoshi Okada, Vivien Béziat, Kunihiko Moriya, Caini Liu, Louis Yi Ann Chai, Mélanie Migaud, Fabian Hauck, Amein Al Ali, Cyril Cyrus, Chittibabu Vatte, Turkan Patiroglu, Ekrem Unal, Marie Ferneiny, Nobuyuki Hyakuna, Serdar Nepesov, Matias Oleastro, Aydan Ikinciogullari, Figen Dogu, Takaki Asano, Osamu Ohara, Ling Yun, Erika Della Mina, Didier Bronnimann, Yuval Itan, Florian Gothe, Jacinta Bustamante, Stéphanie Boisson-Dupuis, Natalia Tahuil, Caner Aytekin, Aicha Salhi, Saleh Al Muhsen, Masao Kobayashi, Julie Toubiana, Laurent Abel, Xiaoxia Li, Yildiz Camcioglu, Fatih Celmeli, Christoph Klein, Suzan A AlKhater, Jean-Laurent Casanova, Anne Puel
Chronic mucocutaneous candidiasis (CMC) is defined as recurrent or persistent infection of the skin, nails, and/or mucosae with commensal Candida species. The first genetic etiology of isolated CMC-autosomal recessive (AR) IL-17 receptor A (IL-17RA) deficiency-was reported in 2011, in a single patient. We report here 21 patients with complete AR IL-17RA deficiency, including this first patient. Each patient is homozygous for 1 of 12 different IL-17RA alleles, 8 of which create a premature stop codon upstream from the transmembrane domain and have been predicted and/or shown to prevent expression of the receptor on the surface of circulating leukocytes and dermal fibroblasts...
December 7, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27926535/high-salt-diet-stimulates-gut-th17-response-and-exacerbates-tnbs-induced-colitis-in-mice
#4
Yingfeng Wei, Chong Lu, Jianing Chen, Guangying Cui, Lin Wang, Tianming Yu, Yue Yang, Wei Wu, Yulong Ding, Lanjuan Li, Toshimitsu Uede, Zhi Chen, Hongyan Diao
This study focuses on characterizing the effect of a high salt diet (HSD) on intestinal immunity and the risk of inflammatory bowel diseases (IBD). We found that mice on a HSD had an increased frequency of IL-17A producing cells in the intestinal lamina propria (LP) compared to mice on a normal diet (ND). Furthermore, most intestinal IL-17A producing cells were CD4+TCRβ+ cells. A HSD increased the LP T helper 17 (Th17) responses in both the small and large intestines but did not increase the Th17 response of other gut-associated lymphoid organ...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27926504/the-immunomodulatory-effects-of-tnf-%C3%AE-inhibitors-on-human-th17-cells-via-ror%C3%AE-t-histone-acetylation
#5
Yi-Ching Lin, Yu-Chih Lin, Cheng-Chin Wu, Ming-Yii Huang, Wen-Chan Tsai, Chih-Hsing Hung, Po-Lin Kuo
The presence of interleukin (IL)-17-related cytokines correlates with rheumatoid arthritis (RA) pathogenesis. Epigenetic modifications, including histone acetylation, regulate gene expression in RA pathogenesis. Tumour necrosis factor-alpha (TNF-α) inhibitors such as etanercept and adalimumab, represent a breakthrough in RA treatment. We aimed to investigate the effects of etanercept and adalimumab on human Th17-polarized cells and the possible intracellular regulators of these effects, including the Th17-specific transcription factors signal transducer, activator of transcription 3 (STAT3), retinoid-related orphan receptor γ-T (RORγt) and epigenetic modification...
December 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/27921415/the-roles-of-t-helper-1-t-helper-17-and-regulatory-t-cells-in-the-pathogenesis-of-sarcoidosis
#6
Esmaeil Mortaz, Fatemeh Rezayat, Davar Amani, Arda Kiani, Johan Garssen, Ian M Adcock, Aliakbar Velayati
Sarcoidosis is a systemic granulomatous disorder of unidentified etiology, with a heterogeneous clinical presentation. It is characterized by a reduced delayed-type hypersensitivity to tuberculin and common antigens. The balance between Th1, Th17 and Regulatory T(Treg) cells controls T-cell proliferation and activation.The Th17/Treg ratio in the peripheral blood and bronchoalveolar lavage fluidis increased in patients with active sarcoidosis. Amplified IL-17A expression in granulomas and the presence of IL-17A+, IL-17A+IL-4+ and IL-17A+IFN-γ+ memory T helper cells in the circulation and BAL indicate Th17 cell involvement in granuloma induction and/or maintenance in sarcoidosis...
August 2016: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/27920272/mcpip1-regnase-1-restricts-il-17a-and-il-17c-dependent-skin-inflammation
#7
Leticia Monin, Johann E Gudjonsson, Erin E Childs, Nilesh Amatya, Xianying Xing, Akash H Verma, Bianca M Coleman, Abhishek V Garg, Meaghan Killeen, Alicia Mathers, Nicole L Ward, Sarah L Gaffen
The IL-17 family cytokines IL-17A and IL-17C drive the pathogenesis of psoriatic skin inflammation, and anti-IL-17A Abs were recently approved to treat human psoriasis. Little is known about mechanisms that restrain IL-17 cytokine-mediated signaling, particularly IL-17C. In this article, we show that the endoribonuclease MCP-1-induced protein 1 (MCPIP1; also known as regnase-1) is markedly upregulated in human psoriatic skin lesions. Similarly, MCPIP1 was overexpressed in the imiquimod (IMQ)-driven mouse model of cutaneous inflammation...
December 5, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27917374/identification-and-characterization-of-staphylococcus-aureus-strains-with-an-incomplete-hemolytic-phenotype
#8
Haifang Zhang, Yi Zheng, Huasheng Gao, Ping Xu, Min Wang, Aiqing Li, Minhui Miao, Xiaofang Xie, Yimai Deng, Huiqin Zhou, Hong Du
Staphylococcus aureus is a common pathogen causing both hospital and community-acquired infections. Hemolysin is one of the important virulence factors for S. aureus and causes the typical β-hemolytic phenotype which is called complete hemolytic phenotype as well. Recently, S. aureus with an incomplete hemolytic phenotype (SIHP) was isolated from clinical samples. To study the microbiologic characteristics of SIHP, the special hemolytic phenotype of SIHP was verified on the sheep blood agar plates supplied by different manufacturers...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27916760/interleukin-17a-induced-epithelial-mesenchymal-transition-of-human-intrahepatic-biliary-epithelial-cells-implications-for-primary-biliary-cirrhosis
#9
Qingshui Huang, Shuai Chu, Xiaofeng Yin, Xiaobin Yu, Chunmin Kang, Xin Li, Yurong Qiu
Primary biliary cirrhosis (PBC) is an autoimmune chronic liver disease with worldwide increasing morbidity. However, the etiology of PBC is still unclear. Recently, the epithelial-mesenchymal transition (EMT) and interleukin-17A (IL-17A), a pro-inflammatory cytokine, were proposed to be involved in the pathogenesis of PBC. Therefore, in this study, we aimed to clarify the roles of IL-17A and/or EMT in the onset of PBC. The results showed that the median serum IL-17A level was significantly higher in 29 PBC patients (average course of 40...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27916100/-correlations-between-serum-25-hydroxyvitamin-d-and-cytokines-in-patients-newly-diagnosed-with-systemic-lupus-erythematosus
#10
Jiang Su, Jing Zhu, Wei Dong, Li Long, Wubin Long, Xixi Chen
Objective To investigate the correlations between serum 25-hydroxyvitamin D (25-OH-VitD) and serum cytokines of interferon (IFN)-α2, interleukin(IL)-6, IL-10, and IL-17A in Chinese Han patients newly diagnosed with systemic lupus erythematosus (SLE). Methods This study recruited 86 Chinese patients newly diagnosed with SLE and 73 healthy volunteers. The serum 25-OH-VitD was detected using ELISA. The serum levels of IFN-α2, IL-6, IL-10 and IL-17A were detected using Luminex liquichip. The associations between serum 25-OH-VitD and serum cytokines, clinical manifestations and laboratory findings were analyzed using Spearman linear correlation analysis...
December 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/27916079/-role-and-mechanism-of-th17-treg-in-obstructive-sleep-apnea-hypopnea-syndrome
#11
Y Liu, Y C Gu, Y Tang, X L Lü, H Chen, Q Z Wu
Objective: To explore the role and the mechanism of Th17/Treg in obstructive sleep apnea hypopnea syndrome (OSAHS). Methods: A total of 100 patients who completed polysomnography (PSG) in the sleep lab of Affiliated Wujiang Hospital of Nantong University from Mar. 2015 to Apr. 2016 were enrolled and divided into four groups (primary snoring as the control group, mild OSAHS, moderate OSAHS and severe OSAHS) according apnea hypopnea index (AHI). The proportion of Th17, Treg (of CD4(+) T cells) and the expression of interleukin (IL)-17A, IL-6 were detected and the relevant data were analyzed by the correlation analysis and the multiple stepwise regression analysis...
November 29, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27916033/-the-early-changes-of-respiratory-system-resistance-and-%C3%AE-%C3%AE-t-lymphocytes-infiltrated-in-graft-after-lung-transplantation-of-mouse
#12
Q R Chen, L F Wang, Y M Zhang, J N Xu, H Li, Y Z Ding
Objectives: To generate an orthotopic left lung transplantation model in mice, and to observe the early changes of respiratory system resistance and γδT lymphocytes infiltrated in grafts. Methods: The research time was from March 2014 to May 2015. The male C57BL/6 mice (n=35) and BALB/c mice (syngenic group, n=10) were randomly divided into five groups. Control group (n=5): wild C57BL/6 mice; syngenic transplant group (n=10): C57BL/6→C57BL/6; allogenic transplant group(allogenic group, n=10): BALB/c→C57BL/6; each transplant group was randomly divided into 3-day and 7-day subgroups (n=5)...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27915442/co-exposure-to-low-doses-of-the-food-contaminants-deoxynivalenol-and-nivalenol-has-a-synergistic-inflammatory-effect-on-intestinal-explants
#13
Imourana Alassane-Kpembi, Olivier Puel, Philippe Pinton, Anne-Marie Cossalter, Ting-Chao Chou, Isabelle P Oswald
The global incidence of Fusarium head blight and attendant cereal grains multi-contamination by the trichothecene mycotoxins deoxynivalenol (DON) and nivalenol (NIV) are increasing as a possible result of climate change and inadequate agricultural practices. At the molecular level, these mycotoxins bind to the ribosome, activate the mitogen-activated protein kinase and induce a local and systemic inflammation. DON is of public health concern owing to the narrow margin between exposure and tolerable daily intake...
December 3, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27914701/il-2-anti-il-2-complexes-ameliorate-lupus-nephritis-by-expansion-of-cd4-cd25-foxp3-regulatory-t%C3%A2-cells
#14
Ji-Jing Yan, Jae-Ghi Lee, Joon Young Jang, Tai Yeon Koo, Curie Ahn, Jaeseok Yang
Adoptive transfer of regulatory T cells (Tregs) can delay disease progression and reduce mortality in lupus-prone mice. Here, we tested whether complex (IL-2C) consisting of IL-2 and anti-IL-2 monoclonal antibody (JES6-1) ameliorates lupus nephritis by expanding Tregs as an alternative to problematic Treg infusion therapy. IL-2C treatment of NZB/W F1 mice induced an effective and sustained expansion of CD4(+)CD25(+)Foxp3(+) Tregs in both the kidneys and spleen along with decreased renal infiltration of T cells, B cells, and innate immune cells...
November 30, 2016: Kidney International
https://www.readbyqxmd.com/read/27913421/role-of-il-17a-in-murine-models-of-copd-airway-disease
#15
Haruhiko Yanagisawa, Mitsuo Hashimoto, Shunsuke Minagawa, Naoki Takasaka, Royce Ma, Catherine Moermans, Saburo Ito, Jun Araya, Alison Budelsky, Amanda Goodsell, Jody L Baron, Stephen L Nishimura
Small airway fibrosis is a major pathologic feature of chronic obstructive pulmonary disease (COPD) and is refractory to current treatments. Chronic inflammatory cells accumulate around small airways in COPD and are thought to play a major role in small airway fibrosis. Mice deficient in α/β T-cells have recently been shown to be protected from both experimental airway inflammation and fibrosis. In these models, CD4+Th17 cells and secretion of IL-17A are increased. However, a pathogenic role for IL-17 in specifically mediating fibrosis around airways has not been demonstrated...
December 2, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27910156/ixekizumab-treatment-improves-fingernail-psoriasis-in-patients-with-moderate-to-severe-psoriasis-results-from-the-randomized-controlled-and-open-label-phases-of-uncover-3
#16
P van de Kerkhof, L Guenther, A B Gottlieb, M Sebastian, J J Wu, P Foley, A Morita, O Goldblum, L Zhang, J Erickson, S Ball, P Rich
BACKGROUND: Fingernail psoriasis is difficult to treat. OBJECTIVE: The objective was to evaluate the effect of ixekizumab, a monoclonal antibody selectively targeting IL-17A, on fingernail psoriasis. METHODS: This Phase 3, double-blind trial (UNCOVER-3) randomized patients to placebo, etanercept (50-mg twice weekly), or 80 mg ixekizumab as one injection every 4 (IXE Q4W) or 2 weeks (IXE Q2W) after a 160-mg starting dose. At Week 12, ixekizumab patients received open-label IXE Q4W through Week 60; placebo patients received a 160-mg starting ixekizumab dose and etanercept patients a 4-week placebo washout before starting IXE Q4W...
November 5, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27909978/il-17a-produced-by-peritoneal-macrophages-promote-the-accumulation-and-function-of-granulocytic-myeloid-derived-suppressor-cells-in-the-development-of-colitis-associated-cancer
#17
Yue Zhang, Juan Wang, Wenxin Wang, Jie Tian, Kai Yin, Xinyi Tang, Jie Ma, Huaxi Xu, Shengjun Wang
It is widely acknowledged that a close relationship is between inflammation and colon cancer. Interleukin (IL)-17A and myeloid-derived suppressor cells (MDSCs) play an important role in the development of colitis-associated cancer (CAC). However, the precise changes of IL-17, MDSCs, and Th17 cells during the CAC progression have not been observed in the colorectal chronic inflammation-dependent tumor. In this study, we found the level of IL-17 was increased in pathogenic colon site during the early stage of CAC model...
December 1, 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/27907047/rage-deficiency-impairs-bacterial-clearance-in-murine-staphylococcal-sepsis-but-has-no-significant-impact-on-staphylococcal-septic-arthritis
#18
Majd Mohammad, Manli Na, Amanda Welin, Mattias N D Svensson, Abukar Ali, Tao Jin, Rille Pullerits
BACKGROUND: Septic arthritis is a serious joint disease often caused by Staphylococcus aureus (S. aureus). Receptor for Advanced Glycation End products (RAGE) has an important role in several infections. We sought to investigate the role of RAGE in staphylococcal septic arthritis and sepsis in mice. METHODS: Wild-type (WT) and RAGE deficient (RAGE-/-) mice were intra-articularly or intravenously inoculated with an arthritic or septic dose of S. aureus LS-1 strain...
2016: PloS One
https://www.readbyqxmd.com/read/27905989/the-histone-deacetylase-inhibitor-sodium-butyrate-exhibits-neuroprotective-effects-for-ischemic-stroke-in-middle-aged-female-rats
#19
Min Jung Park, Farida Sohrabji
BACKGROUND: Sodium butyrate (NaB) is a histone deacetylase (HDAC) inhibitor exhibiting anti-inflammatory and neuroprotective effects in a rat ischemic model of stroke as well as a myocardial ischemia model. Although clinical evidence shows that older women are at higher risk for stroke occurrence and greater stroke severity, no studies have evaluated the effectiveness of NaB either in females or in older animals. METHODS: To determine the effects of NaB on stroke in older females, acyclic middle-aged Sprague-Dawley female rats (9-11 months old, constant diestrus) were subject to middle cerebral artery occlusion (MCAo) by intracerebral injection of recombinant endothelin-1...
December 1, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27905482/pharmacologic-modulation-of-ror%C3%AE-t-translates-to-efficacy-in-preclinical-and-translational-models-of-psoriasis-and-inflammatory-arthritis
#20
Xiaohua Xue, Pejman Soroosh, Aimee De Leon-Tabaldo, Rosa Luna-Roman, Marciano Sablad, Natasha Rozenkrants, Jingxue Yu, Glenda Castro, Homayon Banie, Wai-Ping Fung-Leung, Luis Santamaria-Babi, Thomas Schlueter, Michael Albers, Kristi Leonard, Alison L Budelsky, Anne M Fourie
The IL-23/IL-17 pathway is implicated in autoimmune diseases, particularly psoriasis, where biologics targeting IL-23 and IL-17 have shown significant clinical efficacy. Retinoid-related orphan nuclear receptor gamma t (RORγt) is required for Th17 differentiation and IL-17 production in adaptive and innate immune cells. We identified JNJ-54271074, a potent and highly-selective RORγt inverse agonist, which dose-dependently inhibited RORγt-driven transcription, decreased co-activator binding and promoted interaction with co-repressor protein...
December 1, 2016: Scientific Reports
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